prerequisites.md

@@ -4,7 +4,7 @@ ICoVeR is designed and implemented as a regular [R](http://www.r-project.org/)
 
 
 **N.B**. some users who have their default R library location stored on a network drive have reported issues with installing the application.
-If this is the case  the solution is to set another local folder as the location for storing installed libraries. This should only done if there are issues in installing the ICoVeR project.
+If this is the case  the solution is to set another local folder as the location for storing installed libraries. This should only be done if there are issues in installing the ICoVeR project.
 To set another  location for installing packages , for example ```c:\R_libs``` use the following command 
 
 ```
@@ -13,7 +13,7 @@ To set another  location for installing packages , for example ```c:\R_libs``` u
 
 [Download the most recent version of the project package from here](https://git.list.lu/eScience/ICoVeR/repository/archive.zip?ref=master)
 
-To run our interactive interface, the OpenCPU R-package must be installed. To this end run the following command in R or RStudio.
+To run our interactive interface, some packages must be installed. To this end run the following commands in R or RStudio.